701 lines
26 KiB
C
701 lines
26 KiB
C
/***************************************************************************//**
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* @file
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* @brief Operational Amplifier (OPAMP) peripheral API
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*******************************************************************************
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* # License
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* <b>Copyright 2018 Silicon Laboratories Inc. www.silabs.com</b>
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*******************************************************************************
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*
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* SPDX-License-Identifier: Zlib
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*
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* The licensor of this software is Silicon Laboratories Inc.
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*
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******************************************************************************/
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#include "em_opamp.h"
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#if ((defined(_SILICON_LABS_32B_SERIES_0) && defined(OPAMP_PRESENT) && (OPAMP_COUNT == 1)) \
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|| (defined(_SILICON_LABS_32B_SERIES_1) && defined(VDAC_PRESENT) && (VDAC_COUNT > 0)))
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#include "em_system.h"
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#include "sl_assert.h"
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/* *INDENT-OFF* */
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/***************************************************************************//**
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* @addtogroup opamp OPAMP - Operational Amplifier
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* @brief Operational Amplifier (OPAMP) peripheral API
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* @details
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* This module contains functions to:
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* @li OPAMP_Enable() Configure and enable OPAMP.
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* @li OPAMP_Disable() Disable OPAMP.
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*
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* @if DOXYDOC_P1_DEVICE
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* All OPAMP functions assume that the DAC clock is running. If DAC is not
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* used, the clock can be turned off when OPAMPs are configured.
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* @elseif DOXYDOC_P2_DEVICE
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* All OPAMP functions assume that the VDAC clock is running. If VDAC is not
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* used, the clock can be turned off when the OPAMPs are configured.
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* @endif
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*
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* If the available gain values don't suit the application at hand, the resistor
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* ladders can be disabled and external gain programming resistors used.
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*
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* A number of predefined OPAMP setup macros are available for configuration
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* of the most common OPAMP topologies (see figures below).
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*
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* @note
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* <em>The terms POSPAD and NEGPAD in the figures are used to indicate that these
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* pads should be connected to a suitable signal ground.</em>
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*
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* \n<b>Unity gain voltage follower.</b>\n
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* @if DOXYDOC_P1_DEVICE
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* Use predefined macros @ref OPA_INIT_UNITY_GAIN and
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* @ref OPA_INIT_UNITY_GAIN_OPA2.
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* @elseif DOXYDOC_P2_DEVICE
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* Use predefined macro @ref OPA_INIT_UNITY_GAIN.
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* @endif
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* @verbatim
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___________|+\
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| \_______
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___|_ / |
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| | / |
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| |/ |
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|___________|
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@endverbatim
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*
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* \n<b>Non-inverting amplifier.</b>\n
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* @if DOXYDOC_P1_DEVICE
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* Use predefined macros @ref OPA_INIT_NON_INVERTING and
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* @ref OPA_INIT_NON_INVERTING_OPA2.
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* @elseif DOXYDOC_P2_DEVICE
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* Use predefined macro @ref OPA_INIT_NON_INVERTING.
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* @endif
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* @verbatim
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___________|+\
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| \_______
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___|_ / |
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| | / |
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| |/ |
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|_____R2____|
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R1
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NEGPAD @endverbatim
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*
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* \n<b>Inverting amplifier.</b>\n
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* @if DOXYDOC_P1_DEVICE
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* Use predefined macros @ref OPA_INIT_INVERTING and
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* @ref OPA_INIT_INVERTING_OPA2.
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* @elseif DOXYDOC_P2_DEVICE
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* Use predefined macro @ref OPA_INIT_INVERTING.
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* @endif
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* @verbatim
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_____R2____
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| |
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| |\ |
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____R1_|___|_\ |
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| \____|___
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___| /
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| |+/
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| |/
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POSPAD @endverbatim
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*
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* \n<b>Cascaded non-inverting amplifiers.</b>\n
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* Use predefined macros @ref OPA_INIT_CASCADED_NON_INVERTING_OPA0,
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* @ref OPA_INIT_CASCADED_NON_INVERTING_OPA1 and
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* @ref OPA_INIT_CASCADED_NON_INVERTING_OPA2.
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* @verbatim
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___________|+\ OPA0 ___________|+\ OPA1 ___________|+\ OPA2
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| \_________| | \_________| | \_______
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___|_ / | ___|_ / | ___|_ / |
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| | / | | | / | | | / |
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| |/ | | |/ | | |/ |
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|_____R2____| |_____R2____| |_____R2____|
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| | |
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R1 R1 R1
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NEGPAD NEGPAD NEGPAD @endverbatim
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*
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* \n<b>Cascaded inverting amplifiers.</b>\n
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* Use predefined macros @ref OPA_INIT_CASCADED_INVERTING_OPA0,
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* @ref OPA_INIT_CASCADED_INVERTING_OPA1 and
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* @ref OPA_INIT_CASCADED_INVERTING_OPA2.
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* @verbatim
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_____R2____ _____R2____ _____R2____
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| |\ | | |\ | | |\ |
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____R1_|___|_\ | ____R1_|___|_\ | ____R1_|___|_\ |
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| \____|____| | \____|___| | \____|__
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___| / ___| / ___| /
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| |+/ OPA0 | |+/ OPA1 | |+/ OPA2
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| |/ | |/ | |/
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POSPAD POSPAD POSPAD @endverbatim
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*
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* \n<b>Differential driver with two opamp's.</b>\n
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* Use predefined macros @ref OPA_INIT_DIFF_DRIVER_OPA0 and
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* @ref OPA_INIT_DIFF_DRIVER_OPA1.
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* @verbatim
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__________________________
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| +
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| _____R2____
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___________|+\ OPA0 | | |\ OPA1 |
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| \_________|____R1_|___|_\ | _
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___|_ / | | \____|______
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| | / | ___| /
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| |/ | | |+/
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|________________| | |/
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POSPAD @endverbatim
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*
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* \n<b>Differential receiver with three opamp's.</b>\n
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* Use predefined macros @ref OPA_INIT_DIFF_RECEIVER_OPA0,
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* @ref OPA_INIT_DIFF_RECEIVER_OPA1 and @ref OPA_INIT_DIFF_RECEIVER_OPA2.
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* @verbatim
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__________|+\ OPA1
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_ | \_________
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___|_ / | | _____R2____
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| |/ | | | |\ |
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|___________| |____R1_|___|_\ |
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| \____|___
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|\ ____R1_ ___| /
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+__________|+\ OPA0 | | |+/ OPA2
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| \_________| | |/
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___|_ / | R2
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| |/ | NEGPAD OPA0
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|___________|
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@endverbatim
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*
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* @if DOXYDOC_P2_DEVICE
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* \n<b>Instrumentation amplifier.</b>\n
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* Use predefined macros @ref OPA_INIT_INSTR_AMP_OPA0 and
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* @ref OPA_INIT_INSTR_AMP_OPA1.
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* @verbatim
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__________|+\ OPA1
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| \______________
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___|_ / |
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| |/ R2
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|____________|
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R1
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R1
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____________|
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| R2
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|___|+\ OPA0 |
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| \_____|________
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__________|_ /
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| /
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|/
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@endverbatim
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* @endif
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*
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* @{
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******************************************************************************/
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/* *INDENT-ON* */
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/*******************************************************************************
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************************** GLOBAL FUNCTIONS *******************************
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******************************************************************************/
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/***************************************************************************//**
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* @brief
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* Disable an Operational Amplifier.
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*
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* @if DOXYDOC_P1_DEVICE
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* @param[in] dac
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* A pointer to the DAC peripheral register block.
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* @elseif DOXYDOC_P2_DEVICE
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* @param[in] dac
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* A pointer to the VDAC peripheral register block.
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* @endif
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*
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* @param[in] opa
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* Selects an OPA, valid values are OPA0, OPA1, and OPA2.
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******************************************************************************/
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void OPAMP_Disable(
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#if defined(_SILICON_LABS_32B_SERIES_0)
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DAC_TypeDef *dac,
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#elif defined(_SILICON_LABS_32B_SERIES_1)
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VDAC_TypeDef *dac,
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#endif
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OPAMP_TypeDef opa)
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{
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#if defined(_SILICON_LABS_32B_SERIES_0)
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EFM_ASSERT(DAC_REF_VALID(dac));
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EFM_ASSERT(DAC_OPA_VALID(opa));
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if (opa == OPA0) {
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dac->CH0CTRL &= ~DAC_CH0CTRL_EN;
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dac->OPACTRL &= ~DAC_OPACTRL_OPA0EN;
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} else if (opa == OPA1) {
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dac->CH1CTRL &= ~DAC_CH1CTRL_EN;
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dac->OPACTRL &= ~DAC_OPACTRL_OPA1EN;
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} else { /* OPA2 */
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dac->OPACTRL &= ~DAC_OPACTRL_OPA2EN;
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}
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#elif defined(_SILICON_LABS_32B_SERIES_1)
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EFM_ASSERT(VDAC_REF_VALID(dac));
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EFM_ASSERT(VDAC_OPA_VALID(opa));
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if (opa == OPA0) {
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#if defined(VDAC_STATUS_OPA0ENS)
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dac->CMD |= VDAC_CMD_OPA0DIS;
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while (dac->STATUS & VDAC_STATUS_OPA0ENS) {
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}
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#endif
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#if defined(VDAC_STATUS_OPA1ENS)
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} else if (opa == OPA1) {
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dac->CMD |= VDAC_CMD_OPA1DIS;
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while (dac->STATUS & VDAC_STATUS_OPA1ENS) {
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}
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#endif
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#if defined(VDAC_STATUS_OPA2ENS)
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} else if (opa == OPA2) {
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dac->CMD |= VDAC_CMD_OPA2DIS;
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while (dac->STATUS & VDAC_STATUS_OPA2ENS) {
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}
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#endif
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} else { /* OPA3 */
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#if defined(VDAC_STATUS_OPA3ENS)
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dac->CMD |= VDAC_CMD_OPA3DIS;
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while (dac->STATUS & VDAC_STATUS_OPA3ENS) {
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}
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#endif
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}
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#endif
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}
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/***************************************************************************//**
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* @brief
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* Configure and enable an Operational Amplifier.
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*
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* @if DOXYDOC_P1_DEVICE
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* @note
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* The value of the alternate output enable bit mask in the OPAMP_Init_TypeDef
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* structure should consist of one or more of the
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* DAC_OPA[opa#]MUX_OUTPEN_OUT[output#] flags
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* (defined in \<part_name\>_dac.h) OR'ed together. @n @n
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* For OPA0:
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* @li DAC_OPA0MUX_OUTPEN_OUT0
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* @li DAC_OPA0MUX_OUTPEN_OUT1
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* @li DAC_OPA0MUX_OUTPEN_OUT2
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* @li DAC_OPA0MUX_OUTPEN_OUT3
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* @li DAC_OPA0MUX_OUTPEN_OUT4
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*
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* For OPA1:
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* @li DAC_OPA1MUX_OUTPEN_OUT0
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* @li DAC_OPA1MUX_OUTPEN_OUT1
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* @li DAC_OPA1MUX_OUTPEN_OUT2
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* @li DAC_OPA1MUX_OUTPEN_OUT3
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* @li DAC_OPA1MUX_OUTPEN_OUT4
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*
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* For OPA2:
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* @li DAC_OPA2MUX_OUTPEN_OUT0
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* @li DAC_OPA2MUX_OUTPEN_OUT1
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*
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* E.g: @n
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* init.outPen = DAC_OPA0MUX_OUTPEN_OUT0 | DAC_OPA0MUX_OUTPEN_OUT4;
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*
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* @param[in] dac
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* A pointer to the DAC peripheral register block.
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* @elseif DOXYDOC_P2_DEVICE
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* @note
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* The value of the alternate output enable bit mask in the OPAMP_Init_TypeDef
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* structure should consist of one or more of the
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* VDAC_OPA_OUT_ALTOUTPADEN_OUT[output#] flags
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* (defined in \<part_name\>_vdac.h) OR'ed together. @n @n
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* @li VDAC_OPA_OUT_ALTOUTPADEN_OUT0
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* @li VDAC_OPA_OUT_ALTOUTPADEN_OUT1
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* @li VDAC_OPA_OUT_ALTOUTPADEN_OUT2
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* @li VDAC_OPA_OUT_ALTOUTPADEN_OUT3
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* @li VDAC_OPA_OUT_ALTOUTPADEN_OUT4
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*
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* For example: @n
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* init.outPen = VDAC_OPA_OUT_ALTOUTPADEN_OUT0 | VDAC_OPA_OUT_ALTOUTPADEN_OUT4;
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* @param[in] dac
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* A pointer to the VDAC peripheral register block.
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* @endif
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*
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* @param[in] opa
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* Selects an OPA, valid values are OPA0, OPA1, and OPA2.
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*
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* @param[in] init
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* A pointer to a structure containing OPAMP initialization information.
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******************************************************************************/
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void OPAMP_Enable(
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#if defined(_SILICON_LABS_32B_SERIES_0)
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DAC_TypeDef *dac,
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#elif defined(_SILICON_LABS_32B_SERIES_1)
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VDAC_TypeDef *dac,
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#endif
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OPAMP_TypeDef opa,
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const OPAMP_Init_TypeDef *init)
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{
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#if defined(_SILICON_LABS_32B_SERIES_0)
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uint32_t gain;
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EFM_ASSERT(DAC_REF_VALID(dac));
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EFM_ASSERT(DAC_OPA_VALID(opa));
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EFM_ASSERT(init->bias <= (_DAC_BIASPROG_BIASPROG_MASK
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>> _DAC_BIASPROG_BIASPROG_SHIFT));
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if (opa == OPA0) {
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EFM_ASSERT((init->outPen & ~_DAC_OPA0MUX_OUTPEN_MASK) == 0);
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dac->BIASPROG = (dac->BIASPROG
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& ~(_DAC_BIASPROG_BIASPROG_MASK
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| DAC_BIASPROG_HALFBIAS))
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| (init->bias << _DAC_BIASPROG_BIASPROG_SHIFT)
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| (init->halfBias ? DAC_BIASPROG_HALFBIAS : 0);
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if (init->defaultOffset) {
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gain = dac->CAL & _DAC_CAL_GAIN_MASK;
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SYSTEM_GetCalibrationValue(&dac->CAL);
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dac->CAL = (dac->CAL & ~_DAC_CAL_GAIN_MASK) | gain;
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} else {
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EFM_ASSERT(init->offset <= (_DAC_CAL_CH0OFFSET_MASK
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>> _DAC_CAL_CH0OFFSET_SHIFT));
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dac->CAL = (dac->CAL & ~_DAC_CAL_CH0OFFSET_MASK)
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| (init->offset << _DAC_CAL_CH0OFFSET_SHIFT);
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}
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dac->OPA0MUX = (uint32_t)init->resSel
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| (uint32_t)init->outMode
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| init->outPen
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| (uint32_t)init->resInMux
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| (uint32_t)init->negSel
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| (uint32_t)init->posSel
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| (init->nextOut ? DAC_OPA0MUX_NEXTOUT : 0)
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| (init->npEn ? DAC_OPA0MUX_NPEN : 0)
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| (init->ppEn ? DAC_OPA0MUX_PPEN : 0);
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dac->CH0CTRL |= DAC_CH0CTRL_EN;
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dac->OPACTRL = (dac->OPACTRL
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& ~(DAC_OPACTRL_OPA0SHORT
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| _DAC_OPACTRL_OPA0LPFDIS_MASK
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| DAC_OPACTRL_OPA0HCMDIS))
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| (init->shortInputs ? DAC_OPACTRL_OPA0SHORT : 0)
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| (init->lpfPosPadDisable
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? DAC_OPACTRL_OPA0LPFDIS_PLPFDIS : 0)
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| (init->lpfNegPadDisable
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? DAC_OPACTRL_OPA0LPFDIS_NLPFDIS : 0)
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| (init->hcmDisable ? DAC_OPACTRL_OPA0HCMDIS : 0)
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| DAC_OPACTRL_OPA0EN;
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} else if ( opa == OPA1 ) {
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EFM_ASSERT((init->outPen & ~_DAC_OPA1MUX_OUTPEN_MASK) == 0);
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dac->BIASPROG = (dac->BIASPROG
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& ~(_DAC_BIASPROG_BIASPROG_MASK
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| DAC_BIASPROG_HALFBIAS))
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| (init->bias << _DAC_BIASPROG_BIASPROG_SHIFT)
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| (init->halfBias ? DAC_BIASPROG_HALFBIAS : 0);
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if (init->defaultOffset) {
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gain = dac->CAL & _DAC_CAL_GAIN_MASK;
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SYSTEM_GetCalibrationValue(&dac->CAL);
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dac->CAL = (dac->CAL & ~_DAC_CAL_GAIN_MASK) | gain;
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} else {
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EFM_ASSERT(init->offset <= (_DAC_CAL_CH1OFFSET_MASK
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>> _DAC_CAL_CH1OFFSET_SHIFT));
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dac->CAL = (dac->CAL & ~_DAC_CAL_CH1OFFSET_MASK)
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| (init->offset << _DAC_CAL_CH1OFFSET_SHIFT);
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}
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dac->OPA1MUX = (uint32_t)init->resSel
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| (uint32_t)init->outMode
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| init->outPen
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| (uint32_t)init->resInMux
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| (uint32_t)init->negSel
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| (uint32_t)init->posSel
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| (init->nextOut ? DAC_OPA1MUX_NEXTOUT : 0)
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| (init->npEn ? DAC_OPA1MUX_NPEN : 0)
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| (init->ppEn ? DAC_OPA1MUX_PPEN : 0);
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dac->CH1CTRL |= DAC_CH1CTRL_EN;
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dac->OPACTRL = (dac->OPACTRL
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& ~(DAC_OPACTRL_OPA1SHORT
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| _DAC_OPACTRL_OPA1LPFDIS_MASK
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| DAC_OPACTRL_OPA1HCMDIS))
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| (init->shortInputs ? DAC_OPACTRL_OPA1SHORT : 0)
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| (init->lpfPosPadDisable
|
|
? DAC_OPACTRL_OPA1LPFDIS_PLPFDIS : 0)
|
|
| (init->lpfNegPadDisable
|
|
? DAC_OPACTRL_OPA1LPFDIS_NLPFDIS : 0)
|
|
| (init->hcmDisable ? DAC_OPACTRL_OPA1HCMDIS : 0)
|
|
| DAC_OPACTRL_OPA1EN;
|
|
} else { /* OPA2 */
|
|
EFM_ASSERT((init->posSel == DAC_OPA2MUX_POSSEL_DISABLE)
|
|
|| (init->posSel == DAC_OPA2MUX_POSSEL_POSPAD)
|
|
|| (init->posSel == DAC_OPA2MUX_POSSEL_OPA1INP)
|
|
|| (init->posSel == DAC_OPA2MUX_POSSEL_OPATAP));
|
|
|
|
EFM_ASSERT((init->outMode & ~DAC_OPA2MUX_OUTMODE) == 0);
|
|
|
|
EFM_ASSERT((init->outPen & ~_DAC_OPA2MUX_OUTPEN_MASK) == 0);
|
|
|
|
dac->BIASPROG = (dac->BIASPROG
|
|
& ~(_DAC_BIASPROG_OPA2BIASPROG_MASK
|
|
| DAC_BIASPROG_OPA2HALFBIAS))
|
|
| (init->bias << _DAC_BIASPROG_OPA2BIASPROG_SHIFT)
|
|
| (init->halfBias ? DAC_BIASPROG_OPA2HALFBIAS : 0);
|
|
|
|
if (init->defaultOffset) {
|
|
SYSTEM_GetCalibrationValue(&dac->OPAOFFSET);
|
|
} else {
|
|
EFM_ASSERT(init->offset <= (_DAC_OPAOFFSET_OPA2OFFSET_MASK
|
|
>> _DAC_OPAOFFSET_OPA2OFFSET_SHIFT));
|
|
dac->OPAOFFSET = (dac->OPAOFFSET & ~_DAC_OPAOFFSET_OPA2OFFSET_MASK)
|
|
| (init->offset << _DAC_OPAOFFSET_OPA2OFFSET_SHIFT);
|
|
}
|
|
|
|
dac->OPA2MUX = (uint32_t)init->resSel
|
|
| (uint32_t)init->outMode
|
|
| init->outPen
|
|
| (uint32_t)init->resInMux
|
|
| (uint32_t)init->negSel
|
|
| (uint32_t)init->posSel
|
|
| (init->nextOut ? DAC_OPA2MUX_NEXTOUT : 0)
|
|
| (init->npEn ? DAC_OPA2MUX_NPEN : 0)
|
|
| (init->ppEn ? DAC_OPA2MUX_PPEN : 0);
|
|
|
|
dac->OPACTRL = (dac->OPACTRL
|
|
& ~(DAC_OPACTRL_OPA2SHORT
|
|
| _DAC_OPACTRL_OPA2LPFDIS_MASK
|
|
| DAC_OPACTRL_OPA2HCMDIS))
|
|
| (init->shortInputs ? DAC_OPACTRL_OPA2SHORT : 0)
|
|
| (init->lpfPosPadDisable
|
|
? DAC_OPACTRL_OPA2LPFDIS_PLPFDIS : 0)
|
|
| (init->lpfNegPadDisable
|
|
? DAC_OPACTRL_OPA2LPFDIS_NLPFDIS : 0)
|
|
| (init->hcmDisable ? DAC_OPACTRL_OPA2HCMDIS : 0)
|
|
| DAC_OPACTRL_OPA2EN;
|
|
}
|
|
|
|
#elif defined(_SILICON_LABS_32B_SERIES_1)
|
|
uint32_t calData = 0;
|
|
uint32_t warmupTime;
|
|
|
|
EFM_ASSERT(VDAC_REF_VALID(dac));
|
|
EFM_ASSERT(VDAC_OPA_VALID(opa));
|
|
EFM_ASSERT(init->settleTime <= (_VDAC_OPA_TIMER_SETTLETIME_MASK
|
|
>> _VDAC_OPA_TIMER_SETTLETIME_SHIFT));
|
|
EFM_ASSERT(init->startupDly <= (_VDAC_OPA_TIMER_STARTUPDLY_MASK
|
|
>> _VDAC_OPA_TIMER_STARTUPDLY_SHIFT));
|
|
EFM_ASSERT((init->outPen & ~_VDAC_OPA_OUT_ALTOUTPADEN_MASK) == 0);
|
|
EFM_ASSERT((init->drvStr == opaDrvStrLowerAccLowStr)
|
|
|| (init->drvStr == opaDrvStrLowAccLowStr)
|
|
|| (init->drvStr == opaDrvStrHighAccHighStr)
|
|
|| (init->drvStr == opaDrvStrHigherAccHighStr));
|
|
|
|
/* Disable OPAMP before writing to registers. */
|
|
OPAMP_Disable(dac, opa);
|
|
|
|
/* Get the calibration value based on OPAMP, Drive Strength, and INCBW. */
|
|
switch (opa) {
|
|
#if defined(VDAC_STATUS_OPA0ENS)
|
|
case OPA0:
|
|
switch (init->drvStr) {
|
|
case opaDrvStrLowerAccLowStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA0CAL0 : DEVINFO->OPA0CAL4);
|
|
break;
|
|
case opaDrvStrLowAccLowStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA0CAL1 : DEVINFO->OPA0CAL5);
|
|
break;
|
|
case opaDrvStrHighAccHighStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA0CAL2 : DEVINFO->OPA0CAL6);
|
|
break;
|
|
case opaDrvStrHigherAccHighStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA0CAL3 : DEVINFO->OPA0CAL7);
|
|
break;
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#if defined(VDAC_STATUS_OPA1ENS)
|
|
case OPA1:
|
|
switch (init->drvStr) {
|
|
case opaDrvStrLowerAccLowStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA1CAL0 : DEVINFO->OPA1CAL4);
|
|
break;
|
|
case opaDrvStrLowAccLowStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA1CAL1 : DEVINFO->OPA1CAL5);
|
|
break;
|
|
case opaDrvStrHighAccHighStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA1CAL2 : DEVINFO->OPA1CAL6);
|
|
break;
|
|
case opaDrvStrHigherAccHighStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA1CAL3 : DEVINFO->OPA1CAL7);
|
|
break;
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#if defined(VDAC_STATUS_OPA2ENS)
|
|
case OPA2:
|
|
switch (init->drvStr) {
|
|
case opaDrvStrLowerAccLowStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA2CAL0 : DEVINFO->OPA2CAL4);
|
|
break;
|
|
case opaDrvStrLowAccLowStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA2CAL1 : DEVINFO->OPA2CAL5);
|
|
break;
|
|
case opaDrvStrHighAccHighStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA2CAL2 : DEVINFO->OPA2CAL6);
|
|
break;
|
|
case opaDrvStrHigherAccHighStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA2CAL3 : DEVINFO->OPA2CAL7);
|
|
break;
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#if defined(VDAC_STATUS_OPA3ENS)
|
|
case OPA3:
|
|
switch (init->drvStr) {
|
|
case opaDrvStrLowerAccLowStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA3CAL0 : DEVINFO->OPA3CAL4);
|
|
break;
|
|
case opaDrvStrLowAccLowStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA3CAL1 : DEVINFO->OPA3CAL5);
|
|
break;
|
|
case opaDrvStrHighAccHighStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA3CAL2 : DEVINFO->OPA3CAL6);
|
|
break;
|
|
case opaDrvStrHigherAccHighStr:
|
|
calData = (init->ugBwScale ? DEVINFO->OPA3CAL3 : DEVINFO->OPA3CAL7);
|
|
break;
|
|
}
|
|
break;
|
|
#endif
|
|
}
|
|
if (!init->defaultOffsetN) {
|
|
EFM_ASSERT(init->offsetN <= (_VDAC_OPA_CAL_OFFSETN_MASK
|
|
>> _VDAC_OPA_CAL_OFFSETN_SHIFT));
|
|
calData = (calData & ~_VDAC_OPA_CAL_OFFSETN_MASK)
|
|
| (init->offsetN << _VDAC_OPA_CAL_OFFSETN_SHIFT);
|
|
}
|
|
if (!init->defaultOffsetP) {
|
|
EFM_ASSERT(init->offsetP <= (_VDAC_OPA_CAL_OFFSETP_MASK
|
|
>> _VDAC_OPA_CAL_OFFSETP_SHIFT));
|
|
calData = (calData & ~_VDAC_OPA_CAL_OFFSETP_MASK)
|
|
| (init->offsetP << _VDAC_OPA_CAL_OFFSETP_SHIFT);
|
|
}
|
|
|
|
dac->OPA[opa].CAL = (calData & _VDAC_OPA_CAL_MASK);
|
|
|
|
dac->OPA[opa].MUX = (uint32_t)init->resSel
|
|
| (init->gain3xEn ? VDAC_OPA_MUX_GAIN3X : 0)
|
|
| (uint32_t)init->resInMux
|
|
| (uint32_t)init->negSel
|
|
| (uint32_t)init->posSel;
|
|
|
|
dac->OPA[opa].OUT = (uint32_t)init->outMode
|
|
| (uint32_t)init->outPen;
|
|
|
|
switch (init->drvStr) {
|
|
case opaDrvStrHigherAccHighStr:
|
|
warmupTime = 6;
|
|
break;
|
|
|
|
case opaDrvStrHighAccHighStr:
|
|
warmupTime = 8;
|
|
break;
|
|
|
|
case opaDrvStrLowAccLowStr:
|
|
warmupTime = 85;
|
|
break;
|
|
|
|
case opaDrvStrLowerAccLowStr:
|
|
default:
|
|
warmupTime = 100;
|
|
break;
|
|
}
|
|
|
|
dac->OPA[opa].TIMER = (uint32_t)(init->settleTime
|
|
<< _VDAC_OPA_TIMER_SETTLETIME_SHIFT)
|
|
| (uint32_t)(warmupTime
|
|
<< _VDAC_OPA_TIMER_WARMUPTIME_SHIFT)
|
|
| (uint32_t)(init->startupDly
|
|
<< _VDAC_OPA_TIMER_STARTUPDLY_SHIFT);
|
|
|
|
dac->OPA[opa].CTRL = (init->aportYMasterDisable
|
|
? VDAC_OPA_CTRL_APORTYMASTERDIS : 0)
|
|
| (init->aportXMasterDisable
|
|
? VDAC_OPA_CTRL_APORTXMASTERDIS : 0)
|
|
| (uint32_t)init->prsOutSel
|
|
| (uint32_t)init->prsSel
|
|
| (uint32_t)init->prsMode
|
|
| (init->prsEn ? VDAC_OPA_CTRL_PRSEN : 0)
|
|
| (init->halfDrvStr
|
|
? VDAC_OPA_CTRL_OUTSCALE_HALF
|
|
: VDAC_OPA_CTRL_OUTSCALE_FULL)
|
|
| (init->hcmDisable ? VDAC_OPA_CTRL_HCMDIS : 0)
|
|
| (init->ugBwScale ? VDAC_OPA_CTRL_INCBW : 0)
|
|
| (uint32_t)init->drvStr;
|
|
|
|
if (opa == OPA0) {
|
|
#if defined(VDAC_STATUS_OPA0ENS)
|
|
dac->CMD |= VDAC_CMD_OPA0EN;
|
|
#endif
|
|
#if defined(VDAC_STATUS_OPA1ENS)
|
|
} else if (opa == OPA1) {
|
|
dac->CMD |= VDAC_CMD_OPA1EN;
|
|
#endif
|
|
#if defined(VDAC_STATUS_OPA2ENS)
|
|
} else if (opa == OPA2) {
|
|
dac->CMD |= VDAC_CMD_OPA2EN;
|
|
#endif
|
|
#if defined(VDAC_STATUS_OPA3ENS)
|
|
} else { /* OPA3 */
|
|
dac->CMD |= VDAC_CMD_OPA3EN;
|
|
#endif
|
|
}
|
|
|
|
#endif
|
|
}
|
|
|
|
/** @} (end addtogroup opamp) */
|
|
|
|
#endif /* (defined(OPAMP_PRESENT) && (OPAMP_COUNT == 1)
|
|
|| defined(VDAC_PRESENT) && (VDAC_COUNT > 0) */
|